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The purpose of this case study was to investigate online discussion as a means to promote critical reflection. The study was conducted during a semester-long graduate course on issues related to literacy instructional strategies. The participants in the study were four reading education candidates. During the semester they participated in online discussion about course readings and reflected on their own teaching experiences. The data sources were the online discussion postings, responses to questionnaires, and interviews. The results suggest that technology-mediated discussion strengthens the learning community, facilitates sharing of professional experience among participants, and enhances teacher reflection. The results also point to the multi-faceted nature of teacher reflection. | Knowledge Management E-Learning An International Journal Vol. 3 No. 4. 548 Supporting Teacher Reflection through Online Discussion Jiening Ruan Jeannine Rainbolt College of Education University of Oklahoma USA E-mail jruan@ou.edu Priscilla L. Griffith Jeannine Rainbolt College of Education University of Oklahoma USA E-mail pgriffith@ou.edu Corresponding author Abstract The purpose of this case study was to investigate online discussion as a means to promote critical reflection. The study was conducted during a semester-long graduate course on issues related to literacy instructional strategies. The participants in the study were four reading education candidates. During the semester they participated in online discussion about course readings and reflected on their own teaching experiences. The data sources were the online discussion postings responses to questionnaires and interviews. The results suggest that technology-mediated discussion strengthens the learning community facilitates sharing of professional experience among participants and enhances teacher reflection. The results also point to the multi-faceted nature of teacher reflection. Keywords Technology-Mediated Discussion Online Discussion Teacher Reflection Biographical notes Dr. Jiening Ruan is an associate professor of literacy and reading education and chair of the Reading Specialist Certification Program at the University of Oklahoma. Her research interests include literacy development of diverse student populations in the United States and in international contexts teacher reflection and technology and literacy integration. Dr. Priscilla L. Griffith is a professor and the Ruth G. Hardman Chair in Education at the University of Oklahoma where she directs the Hardman Center for Children with Learning Differences and the Oklahoma Writing Project. Her research interests include early literacy learning and teacher professional development. 1. Review of the Literature Reflection is a term that has been